Ford 390 to 400m swap

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So I'm working on a friend's 1963 Mercury Monte Claire that needs a motor but I can't find a 390 anywhere, so I found a Ford 400m for cheap and I was wondering what it would take for me to force in this motor in a weekend or two. Anybody know?

posted by  x1/9-rally

the 400m really isnt even close to the 390. i would find an engine of the same class to fit in it. i believe the 390 is an FE engine but dont quote me on it. see if you cane find something of the same class and go from there. i dont even think the 400m will bolt to the existing transmission.

posted by  glagon1979

Your right that the 390 is an FE block. The 390 shares the same block design as the 360 and the 427 FE, but I can not find any of these motors at a remotely desent price. If I can't find a solution soon I'll just have to put a small block chevy into it.

posted by  x1/9-rally

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